./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/scopes1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/scopes1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95e3931fe811aa62c0e25f30e6d631683a52857f ................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:24:12,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:24:12,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:24:12,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:24:12,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:24:12,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:24:12,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:24:12,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:24:12,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:24:12,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:24:12,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:24:12,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:24:12,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:24:12,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:24:12,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:24:12,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:24:12,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:24:12,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:24:12,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:24:12,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:24:12,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:24:12,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:24:12,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:24:12,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:24:12,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:24:12,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:24:12,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:24:12,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:24:12,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:24:12,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:24:12,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:24:12,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:24:12,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:24:12,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:24:12,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:24:12,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:24:12,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:24:12,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:24:12,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:24:12,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:24:12,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:24:12,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:24:12,681 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:24:12,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:24:12,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:24:12,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:24:12,684 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:24:12,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:24:12,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:24:12,685 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:24:12,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:24:12,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:24:12,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:24:12,687 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:24:12,687 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:24:12,688 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:24:12,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:24:12,688 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:24:12,689 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:24:12,689 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:24:12,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:24:12,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:24:12,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:24:12,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:24:12,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:24:12,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:24:12,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:24:12,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:24:12,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:24:12,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:24:12,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95e3931fe811aa62c0e25f30e6d631683a52857f [2020-10-19 18:24:13,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:24:13,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:24:13,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:24:13,022 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:24:13,023 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:24:13,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/scopes1.c [2020-10-19 18:24:13,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd6f0d84a/360b2195a01742d988b618c828880470/FLAGc4c1257d4 [2020-10-19 18:24:13,479 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:24:13,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/scopes1.c [2020-10-19 18:24:13,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd6f0d84a/360b2195a01742d988b618c828880470/FLAGc4c1257d4 [2020-10-19 18:24:13,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd6f0d84a/360b2195a01742d988b618c828880470 [2020-10-19 18:24:13,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:24:13,925 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:24:13,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:24:13,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:24:13,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:24:13,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:24:13" (1/1) ... [2020-10-19 18:24:13,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb8f2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:13, skipping insertion in model container [2020-10-19 18:24:13,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:24:13" (1/1) ... [2020-10-19 18:24:13,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:24:13,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:24:14,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:24:14,179 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:24:14,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:24:14,217 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:24:14,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:14 WrapperNode [2020-10-19 18:24:14,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:24:14,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:24:14,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:24:14,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:24:14,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:14" (1/1) ... [2020-10-19 18:24:14,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:14" (1/1) ... [2020-10-19 18:24:14,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:14" (1/1) ... [2020-10-19 18:24:14,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:14" (1/1) ... [2020-10-19 18:24:14,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:14" (1/1) ... [2020-10-19 18:24:14,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:14" (1/1) ... [2020-10-19 18:24:14,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:14" (1/1) ... [2020-10-19 18:24:14,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:24:14,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:24:14,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:24:14,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:24:14,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:24:14,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:24:14,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:24:14,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:24:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-19 18:24:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:24:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:24:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:24:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:24:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:24:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:24:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:24:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:24:14,628 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:24:14,629 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-19 18:24:14,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:24:14 BoogieIcfgContainer [2020-10-19 18:24:14,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:24:14,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:24:14,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:24:14,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:24:14,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:24:13" (1/3) ... [2020-10-19 18:24:14,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412dd3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:24:14, skipping insertion in model container [2020-10-19 18:24:14,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:14" (2/3) ... [2020-10-19 18:24:14,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412dd3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:24:14, skipping insertion in model container [2020-10-19 18:24:14,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:24:14" (3/3) ... [2020-10-19 18:24:14,639 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes1.c [2020-10-19 18:24:14,651 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:24:14,659 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-19 18:24:14,675 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-19 18:24:14,698 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:24:14,699 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:24:14,699 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:24:14,699 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:24:14,699 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:24:14,699 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:24:14,699 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:24:14,700 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:24:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-19 18:24:14,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:24:14,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:14,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:14,736 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 18:24:14,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:14,746 INFO L82 PathProgramCache]: Analyzing trace with hash -2123086958, now seen corresponding path program 1 times [2020-10-19 18:24:14,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:14,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181516938] [2020-10-19 18:24:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:24:14,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:24:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:24:15,039 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:24:15,071 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:24:15,072 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:24:15,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:24:15,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:24:15 BoogieIcfgContainer [2020-10-19 18:24:15,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:24:15,094 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:24:15,095 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:24:15,095 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:24:15,096 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:24:14" (3/4) ... [2020-10-19 18:24:15,098 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:24:15,142 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:24:15,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:24:15,145 INFO L168 Benchmark]: Toolchain (without parser) took 1227.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 957.3 MB in the beginning and 1.1 GB in the end (delta: -140.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:24:15,146 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:24:15,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.36 ms. Allocated memory is still 1.0 GB. Free memory was 957.3 MB in the beginning and 945.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:15,148 INFO L168 Benchmark]: Boogie Preprocessor took 101.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -185.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:15,149 INFO L168 Benchmark]: RCFGBuilder took 309.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:15,149 INFO L168 Benchmark]: TraceAbstraction took 462.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:15,150 INFO L168 Benchmark]: Witness Printer took 48.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:24:15,154 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 289.36 ms. Allocated memory is still 1.0 GB. Free memory was 957.3 MB in the beginning and 945.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 101.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -185.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 309.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 462.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * Witness Printer took 48.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L4] int *myPointerA = ((void*) 0); [L5] int *myPointerB = ((void*) 0); [L8] int myNumberA = 7; [L9] myPointerA = &myNumberA [L8] int myNumberA = 7; [L13] int myNumberB = 3; [L14] myPointerB = &myNumberB VAL [myNumberB={8:0}, myPointerA={5:0}, myPointerB={8:0}] [L16] \read(*myPointerA) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...